| 基于地层损失比的隧道开挖对临近群桩影响的DCM方法 |
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| 引用本文： | 杜佐龙,黄茂松,李早.基于地层损失比的隧道开挖对临近群桩影响的DCM方法[J].岩土力学,2009,30(10):3043-3047. |
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| 作者姓名： | 杜佐龙 黄茂松 李早 |
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| 作者单位： | 同济大学,岩土及地下工程教育部重点实验室,上海,200092;同济大学,地下建筑与工程系,上海,200092 |
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| 基金项目： | 教育部高等学校博士点基金项目 |
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| 摘 要： | 采用基于地层损失比的位移控制有限单元法（displacement controlled method），对两种不同的给定位移边界条件下的隧道开挖引起的地层损失对群桩带来的影响进行了分析。首先，用隧道开挖引起的洞周位移场的变化来模拟实际的隧道开挖过程，然后，将土体自由位移场施加于2×2群桩来分析桩基的位移和内力，最后得到隧道开挖对群桩的影响，并与已有文献的分析结果进行了对比，得到了较好的一致性。
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| 关 键 词： | 两阶段分析法 DCM 群桩 有限元 |
| 收稿时间： | 2008-09-12 |
DCM-based on ground loss for response of group piles induced by tunneling |
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| DU Zuo-long,HUANG Mao-song,LI Zao.DCM-based on ground loss for response of group piles induced by tunneling[J].Rock and Soil Mechanics,2009,30(10):3043-3047. |
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| Authors: | DU Zuo-long HUANG Mao-song LI Zao |
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| Institution: | 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | In the analysis of pile response due to tunneling under two different displacement boundary conditions, a displacement controlled method (DCM) based on ground loss is used. The first stage, the transformation of soil displacement field around tunnel is introduced to simulate the process of actual tunneling. Then the second stage, free soil displacement field is loaded to group piles(2×2) to analyze the response(including settlement and force); the results from the presented approach by DCM are compared with ones from other papers; the good agreement is obtained. |
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| Keywords: | DCM |
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